Son is growing potatoes in bags, we have not yet harvested these so
have no idea if the technique works.
We decided it would be good to have "new" potatoes at Christmas . Is
there anywhere that seed potatoes are available for harvesting at
Christmas? When would we plant these seed potatoes? Are there any
Gotchas we should be aware of?
We live just outside Edinburgh but at 600' up. Bags just now are sited
out of direct sunlight and direct wind.

Photo. of foliage growing on Potato sacks:-
http://www.sidtech.co.uk/iu/soup29465686315.JPG